Jessica Alba didn’t want her character to use a gun in ‘Trigger Warning’. The 43-year-old actress plays Special Forces commando Parker in the Netflix action film and explained that she and director Mouly Surya made the decision to have her character use a knife in combat scenes instead. In an interview with Collider, Jessica said: “That was a choice. 100 per cent. Both of us did. We feel like this genre is dominated these days by a lot of gun killing and gun fights and all of that. “It kind of goes with the genre in a lot of ways, and ‘John Wick’ wins that narrative, and so we were like, ‘What…